add IsPreShared filed for Group data
add group changed realtime supporting
add some group data
Fix presentation link in mail #1164
update groupchange data
Merge branch 'master' into sharing-pending
Merge branch 'master' into sharing-pending

Conflicts:
	ws_reply_data.go
Merge branch 'master' into sharing-pending

Conflicts:
	data.go
New layout of Left group Sidebar
New layout for group selector
Merge pull request #8 from theplant/sharing-pending

Sharing pending